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Aprendizagens profissionais sobre a docência e pesquisa científica de tutoras de um programa híbrido de mentoria da UFSCar
(Universidade Federal de São Carlos, 2021-06-30)
Carvalho, Brenda Karla Reis de
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Reali, Aline Maria de Medeiros Rodrigues
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https://lattes.cnpq.br/3250195451890332
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https://lattes.cnpq.br/4712956217323882
This dissertation is linked to the Graduate Program in Education at the Federal University of São Carlos-UFSCar in the research group: Teacher and other Educational Agents Education. The scope of the investigation was to identify and analyze the professional apprenticeships constructed by the tutors, scholarship holders of technical training level three (TT3), from the Hybrid Mentoring Program (HMP) of UFSCar and to know processes that were related to this construction. HMP (2017-2020), the research scenario, was a teaching induction program, with funding from FAPESP, whose objective was the professional development of beginning and experienced teachers through mentoring. Mentoring can be defined as the process in which an experienced teacher, trained to be a mentor, assists teachers in the first years of professional insertion. The HMP stands out for being an investigation-intervention based on the theoretical assumptions of constructive-collaborative research; for articulating face-to-face and virtual activities and for uniting the Basic Education school and university as training spaces in order to create bridges between theory and practice. The program's virtual activities took place in the virtual learning environment Moodle. The TT3 scholarships are offered by FAPESP and their purpose is the scientific training of graduates, without failing the academic record, with the aim of training human resources for scientific research. Among the functions of tutors-TT3 in HMP it is possible to mention: the accompaniment of the mentors through feedbacks, assistance to the mentors in the accompaniment of the dyads (mentor-novice teacher), systematization and data analysis, writing of scientific articles and organization and conducting face-to-face meetings of the HMP group at UFSCar. Given the context of the research scenario and the participants, it is worth mentioning that this study was carried out with three tutors / TT3 who worked at HMP in the period of 24 months. The participants were asked to write narratives about the remarkable moments that, in their perspective, allowed the construction of learning during their experiences at HMP. The investigation was based on the qualitative approach of the exploratory type. The theoretical framework was about teaching learning, knowledge base, professional teaching development, reflection and reflective practice. Data analysis was inspired by Content Analysis techniques. The data revealed that the tutors built learning organized in two categories: I) Noteworthy moments and learning about the tutors' teaching / TT3 and II) Noteworthy Moments and Learning about Scientific Research. Among the knowledge constructed about category I, we mention: writing of formative feedback, knowledge about teacher education, training of mentors, reflection and learning from teaching, resilience, learning about the teaching modalities of Basic Education (Brazilian context). In relation to category II, we mention: knowledge related to scientific research in the field of teacher education: systematization and data analysis, written narratives in teacher education-research, characteristics of intervention-research, development of an inquiring look. The main processes that circumscribed the construction of these learnings were: the training course for tutor-TT3; the practice of tutoring; interactions between mentors, beginners, and HMP research group; and reflection in/on practice. The data indicated that the tutors / TT3 were gradually building a knowledge base similar to that of a professor, but with more specific characteristics related to the training of mentors. Also, they built knowledge related to being researchers in the field of Education
Contribuições da ciência da informação para o combate à disseminação de notícias falsas nas mídias sociais
(Universidade Federal de São Carlos, 2021-06-30)
Marchi, Viviani Regina
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Dal'Evedove, Paula Regina
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https://lattes.cnpq.br/1170937498266968
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https://lattes.cnpq.br/0012532693543380
Factually incorrect information makes it difficult to communicate information in the most diverse sectors of society. Given the increase in the consumption of digital content on social media, the question is: What recommendations to combat the dissemination of false news on social media are discussed and presented by Information Science for a safe and committed librarianship with this contemporary demand. Faced with the research problem, we sought to identify strategies to combat the dissemination of false news on social media presented by the Information Science literature, aiming to provide an overview of the studies dedicated to the topic and collaborate with the dissemination of the main actions and recommendations currently adopted. To this end, an exploratory- descriptive study was conducted that combines bibliographic research to substantiate the theme and data collection on the Web of Science from research from Information Science from the period 2015 to 2020 and focusing on strategies and/or recommendations to combat fake news on social media. Data processing was based on the method of content analysis, with detailed analyzes of the 12 scientific articles selected as the research corpus. As a result, there is the use of different technological resources of fact-checking and informational control to curb the spread of false news; and approaches involving informational behavior and competence, with emphasis on an ethical and responsible performance on the part of librarians. As conclusions, there is the incipient research focused on the discussion and proposal of strategies to combat misinformation in social media, with a greater involvement of the scientific community on the subject.
Possibilidades de ações da gestão escolar para a inserção profissional dos professores dos anos iniciais
(Universidade Federal de São Carlos, 2021-06-30)
Moretti, Vivian Maggiorini
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Gama, Renata Prenstteter
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https://lattes.cnpq.br/4153572041829838
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https://lattes.cnpq.br/9330289427987366
The research has as object to evidence and analyze the possibilities of actions of the school management in the process of professional insertion of teachers declared by teachers of the initial years. For this, a qualitative approach research was carried out, which sought to make sense of the meaning and meaning of the messages, as it allows us to analyze human beings in their relationships with each other, with society and with nature, considering their complexity in the context of regulated subjects. For the construction of the data, a mapping of the beginning teachers of the municipal secretariat of Sorocaba-SP was carried out and a questionnaire with mixed questions was used to obtain an overview of the insertion of teachers in this public network. In order to deepen the data, we opted for semi-structured changes with early-career teachers selected from the questionnaire. An interpretive analysis considered as phases of the professional life cycle defined by Huberman (2000), as a result of teacher development and the process of insertion in the teaching career, which is composed of a peculiar initial professional phase due to the different working conditions, in addition to being considered a period of many learnings. The analysis used the data categorization technique, from a questionnaire and semi-structured interviews with beginning teachers and as theoretical bases on the beginning of the career and professional insertion of teachers (HUBERMAN, 2000; MARCELO GARCIA, 1999 and 2009; MIZUKAMI, 2000 ; TARDIF, 2014) and on school management (LIBÂNEO, 2012; PARO, 2005). Two axes were identified that show the insertion process and the contributions of managers in this early stage of their career, as well as their valuation. The first axis consisted of two categories to analyze the inclusion of teachers in the initial years surveyed. The second axis was composed of three analytical categories of possibilities for actions in school management: reception and reception, monitoring and training. The main results show that, for beginning teachers, the actions and good practices of the management team, offered to the teacher during insertion, ensure greater security in their work, even in the face of difficulties encountered in the beginning of their career.
Aceitação parental: mães heterossexuais com filhos LGBTs
(Universidade Federal de São Carlos, 2021-06-30)
Costa, Moisés Carvalho
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D'Affonseca, Sabrina Mazo
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https://lattes.cnpq.br/0381029115416584
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https://lattes.cnpq.br/1699631179532921
The scientific production about the young LGBT population has highlighted aspects of vulnerability in this population, especially associating it with risk factors for risky sexual behavior, substance abuse, or the development of depressive and anxiety symptoms, and suicide ideation/attempts. On the other hand, there are studies that highlight the role of the family as an important protective factor for these same behaviors and factors, which can even mediate the association between identifying themselves as LGBT and exhibiting suicidal behavior. However, researches that addresses families of LGBT people are scarce and often highlight intra-family violence. This study, therefore, aimed to investigate and understand the process of parental acceptance of heterosexual parents who have children who identify themselves as LGBT people. For this, virtual interviews were carried out with mothers recruited through an invitation on social networks. The collected data were transcribed and analyzed using the Atlas.ti software. The results showed the importance of acceptance in alleviating the suffering of LGBT children and the relevance of sources of support in the acceptance process experienced by mothers. It is recommended that further studies be carried out addressing the issue in order to support interventions with families of LGBT people given the social relevance of the topic.
A disseminação do ideário pedagógico capitalista na educação do campo no estado de Goiás: o Programa Agrinho na escola (2008-2020)
(Universidade Federal de São Carlos, 2021-06-30)
Alves, Jackeline Silva
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Santos, Maria Cristina dos
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https://lattes.cnpq.br/1095065753077001
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https://lattes.cnpq.br/6386559706078558
In Brazil, historically, the education offered to the populations that live and work in the countryside, has been the object of contradictions and it is possible to determine “gaps” that merges with such offer. The children’sschcooling process of the working class in the countryside and in the city, often were committed to the preparation of the workforce necessary for the dynamization of the productive processes. Since the Federal Constitution of 1988, the set of Brazilian norms that govern Educational Policy in the country, opened possibilities for public-private partnerships in Education, and in this sense Educational Programs managed by companies, institutions and foundations materialize in the school space public. Since the Federal Constitution of 1988, the set of Brazilian norms that govern Educational Policy in the country, opened possibilities for public-private partnerships in Education, and in this sense Educational Programs managed by companies, institutions and foundations materialize in the school space public. In view of this, the objective of this research is to identify and understand the contradictions that permeate the Agrinho Social Responsibility Program, in the offer of education in the countryside in Goiás. Aiming to achieve this intent, we defined as specific objectives: to know and identify: the pedagogical and methodological conceptions that underlie the Program; to verify the educational practices guided by this; to analyze the relativization of the teacher's role in mediating the knowledge construction process by the student; as well as on the role of this Program in the elaboration of school knowledge accessed by working class children from the countryside and the city, considering that the concepts and strategies used for the construction of knowledge in the perspective defended by the aforementioned Program are in line with the interests of capital reproduction , by spreading and reinforcing the importance of agribusiness as a productive and viable development model for the entire Brazilian countryside. In order to achieve the proposed objective, we followed the following methodological path: survey and review of theoretical sources that deal with the topic together with books, theses, dissertations and scientific articles; documentary research with the Laws, Norms, Decrees and Resolutions that deal with the education offered in the field, about the possibilities of public-private partnerships in education; and guidelines for Rural Education; conducting the Training Course for Educational Agents for the Agrinho Program in a Virtual Learning Environment; survey of data and information about the Program with the National Rural Apprenticeship Service (SENAR) and the Federation of Agriculture and Livestock of the State of Goiás. The results achieved reveal contradictions and conflicts of interest between what is proposed by the Program and the desires of an education project in the field that is socially referenced and that fosters the development of critical thinking that allows the understanding of multiple contradictions and different realities that make up the totality of the Brazilian field. Agrinho is a Program that has a strong relationship with rural employers, with companies linked to the development of agribusiness, and with investing institutions. Therefore, as agribusiness is a productive model that is highly dependent on the use of pesticides and causes the degradation of the environment, we do not see interest in shed light on the contradictions that arise from the relationship between agricultural production/use of pesticides for human health and for the environment.
As TDICs na EJA: contribuições em teses e dissertações da CAPES
(Universidade Federal de São Carlos, 2021-06-30)
Gonçalves, Letícia Fernanda
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Reyes, Cláudia Raimundo
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https://lattes.cnpq.br/5187942717120318
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https://lattes.cnpq.br/0200318914815206
This investigation had as its central theme the Information and Communication Technologies and Mobile Technologies at EJA: Contribution to Capes theses and dissertations. As a research question, we proposed to investigate: how technologies relate to Youth and Adult Education, specifically in terms I and II, in Capes Theses and Dissertations? Methodologically, we conducted a literature search and identified theses and dissertations defended from 2010 to 2019 that researched on the topic. The descriptors used in the search were: “youth and adult education” and “technologies”. After reading the titles, keywords and abstracts presented, the data were grouped using the proposed analysis of meanings present in the speech, the meaning cores, according to Aguiar and Ozella (2013). As meaning cores, we had: teacher training in technologies at EJA; EJA and its subjects; and the school as the main formative agent in the subjects' lives. The results allowed the realization of some considerations, such as: the importance of continuing education, the lack of public policies that support EJA, as well as research in this type of teaching.
Influência da incorporação de negro de fumo e carbonato de cálcio micro e nanoparticulado nas propriedades reológicas, colorimétricas e mecânicas de filmes de polietileno de baixa densidade
(Universidade Federal de São Carlos, 2021-06-30)
Barbosa, Juliano Martins
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Pessan, Luiz Antonio
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https://lattes.cnpq.br/8276650236213537
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https://lattes.cnpq.br/3824323081408422
In this work, the influence of incorporation of Carbon Black (CB) and CaCO3, both with different particle sizes, on the rheological, colorimetric and mechanical properties of LDPE films were studied. Three different types of CB were selected, with particle sizes of 15, 38 and 75 nm and combined together, generating a DOE with 19 combinations dispersed in LDPE by twin screw extrusion. Such formulations were evaluated in function of performance and processability properties, such as Tint Strength, Filter Pressure Value (FPV) , Melt Flow Index (MFI) and Viscosity. It was determined that the best formulation was a combination between small (P) and medium (M) particles, obtaining the highest tinting and lowest viscosity. Thus, it was studied by varying the process, depending on the speed of the screw (N) and feed rate (Q), to modulate the Specific Mechanical Energy (SME) which, can contribute to better dispersion of pigments. Finally, once formulation and process had been defined (600 rpm and 10 kg/h), CaCO3 was added, micro (D50 = 2.5 μm) and nanoparticulate (D50 = 40 nm) sizes at 10% and 20%, aiming to improve the economic aspect and gain in mechanical properties, maintaining the tinting strength, total transmittance, FPV and viscosity already obtained, however CaCO3 has a high refractive index and acted as low-performance white pigment, decreasing the tinting and increasing the FPV, in addition to interfering in the viscosity. Changes in these properties were observed, however, to a lesser extent with nanoparticulate filled at 10% (F18-P03-N10). The best balance of properties is directly associated with the final application of the formulation such as extrusion or injection molding that require specific characteristics of the concentrate.
Abordagem sistêmica do uso de lodo de ETE e ETA em pavimentação
(Universidade Federal de São Carlos, 2021-06-30)
Ferreira, Gustavo Oliveira
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Achon, Cali Laguna
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https://lattes.cnpq.br/0307406069325793
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https://lattes.cnpq.br/1222282909511079
Research performed from the beginning of the last decade has evaluated the potential allocation of both the sludge water treatment (ETA) and Wastewater Treatment Plant (WWTP) in the asphalt pavement layers and coating. For this purpose, different proportions of sludge in the mixed material portion have been studied, at different values of total sludge solids resulting from the thermal drying method obtained, or even in natura, being tested with or without stabilizing additives. Thus, the present work aims to analyze the research that proposes the possibility of disposal of WWTP and ETA sludge in paving, through a systematic bibliographic review, in which we sought to define the current state of the art on the subject, and from from this, carry out the compilation and analysis of the results obtained from the literature. . For this purpose, the information was organized through tables and comparative graphs between the researches carried out, to analyze the results obtained, focusing mainly on the type of sludge used; in the characterization (chemical, physical and mechanical) of this sludge; in percentages of sludge in the mixture under the aid of physical and mechanical parameters established by DNIT for each pavement layer and the types of traffic in which the use of sludge was proposed. When analyzing selected studies from the literature, within the pre-established criteria, it was found that the characterization parameters, percentages of sludge in the mixture and sample preparation methods are distinct and without a pattern followed by all, which depends more from the location of the ETA or ETE . It was also observed that the percentages of sludge used in the mixtures are diverse and without prior justification for application, but all studies evaluated in this work were successful in paving application, at least technically, in at least one of the mix configurations used. . It was noted that the environmental issue was observed in a minority of studies, however, the leaching and solubilization tests, carried out in some studies, were favorable. A greater inclination was observed in the use of calcined ETE sludge for paving, and the use of energy to remove water from the sludge by mechanical means was not evaluated in the surveys, and should be an important aspect in the intuition of computing monetary expenses in function of the energy consumed to raise this temperature and, in this way, to advance one more stage of analysis of the viability of using ETA and ETA sludge, in real scale, in the paving.
Massas digitais: Uma reflexão psicanalítica
(Universidade Federal de São Carlos, 2021-06-30)
Machado, Maria Rúbia Santos
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Câmara, Leonardo Cardoso Portela
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https://lattes.cnpq.br/0876503068661138
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https://lattes.cnpq.br/6209109296761303
The book Group Psychology and the Analysis of the Ego (1921) completes 100 years and its theory is more present than ever. At a time when the dissemination of conversations and information is extremely facilitated by social networks, we can note that the formation of groups followed the same trend and, consequently, new symptoms are observed. The purpose of this study is to understand how the groups are constituted in social networks, to inquire about which figure guides these processes, and to assess possible effects of this influence. As a result, we propose parallels between groups and social networks and between group leaders and influencers. The reflections developed in this research open possibilities for new studies that aim to understand contemporary social and psychic formations.
Projeto Principia - Robôs na Escola: aprendizagem, desenvolvimento e cidadania
(Universidade Federal de São Carlos, 2021-06-30)
Italiano, Vinicius de Príncipe
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Fernandes, Jarina Rodrigues
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https://lattes.cnpq.br/6612611612919706
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https://lattes.cnpq.br/1578961437304372
Due to their potential, digital information and communication technologies (ICT), in addition to offering entertainment content, guarantee students access to images, videos, research and information, which facilitate the understanding of specific content, contributing to their learning and knowledge. Educational Robotics has the potential to contribute so that teenagers can glimpse new horizons for the use of TDIC, engaging them in learning projects and academic insertion. The main objective of this research is to analyze elements present in the initial activities of the Principia Project: Robots at School, together with the 6th year of elementary school in a public school, in the second half of 2019, that correlate with student development. To meet this objective of this research, we count on the contributions of Vygotsky, Paulo Freire and authors focused on ICT studies and, specifically, on Robotics in Education. The methodology adopted is based on theoretical and methodological contributions from Qualitative Research, in which the researcher acted actively as a participant, taking as a basis for understanding the facts. To record the events, the techniques of unsystematic observation and the production of field diaries were used. As a result of the research, we were able to conclude the identification of five elements: Project construction; Unplugged programming; Establishing connections between different situations and areas of knowledge; Programming and control of robots and reframing instruments. Such elements contributed for students to explore new content, build new learning and use technologies more profitably to leverage their development.
Revisão sistemática dos instrumentos projetivos
(Universidade Federal de São Carlos, 2021-06-30)
Chaguri, Maria Gabriela
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Nascimento, Monalisa Muniz
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https://lattes.cnpq.br/9444899939943716
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https://lattes.cnpq.br/2547445777026110
The objective of this article was to carry out a systematic review of the national literature, in the last 5 years, referring to scientific articles that made use of some technique, test or projective method. Therefore, a search was made in the databases SciELO (Scientific Electronic Library Online), PePSIC (Psychology Electronic Periodicals), Index Psi, LILACS (Latin American and Caribbean Literature on Health Sciences) and CAPES (Coordination for the Improvement of Higher Education Personnel), using the terms projective tests, projective techniques and projective methods. The initial search of the databases generated a total of 82 articles, leaving, after exclusion, only 33 studies from those that did not meet the inclusion criteria and those that met the exclusion criteria related to the empirical character. The results point to a decrease in the number of articles related to the topic since 2015. It is also possible to notice that tests are more representative than projective techniques, especially inkblot tests, such as Zulliger and Rorschach. Regarding the population, it is mostly adult, not clinical or not vulnerable. The articles found here presented only two proposals for new instruments in the projective field. Finally, the data obtained in this review tends to be similar to previous researches.
Um estudo sobre wavestrap
(Universidade Federal de São Carlos, 2021-06-30)
Gremes, Kaê da Silva
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Moura, Maria Sílvia de Assis
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https://lattes.cnpq.br/9410151859448447
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https://lattes.cnpq.br/8120851517975522
Wavelets are basis of function spaces that can be used to represent both continuous (functions) and discrete (sequences) signals; wavelets study gained great notoriety after the work of Daubechies, who developed a wavelet family with compact support (DAUBECHIES,1988). Also in the second half of twentiest century the great advances in computer processing allowed the emergence of various computation intensive methods, such as bootstrap (EFRON, 1979). One of the key assumptions to use bootstrap is that the sample elements are not correlated, generally that is not a characteristic found in time series analysis. This study presents a review on wavestrap: a technique that joins both wavelet analysis and bootstrap resampling. By applying bootstrap to the wavelet transform coeficients we can generate samples that retain roughly the same characteristics of the original signal. We also analyze other nonparametric con fidence intervals based on bootstrap for estimating the fi rst autocorrelation of fi rst order autorregressive processes.
O ensino de avaliação psicológica no estado de São Paulo: análise dos programas das disciplinas
(Universidade Federal de São Carlos, 2021-06-30)
Salgado, Gladys
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Muniz, Monalisa
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https://lattes.cnpq.br/9444899939943716
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https://lattes.cnpq.br/9444899939943716
Psychological Assessment (PA) is a fundamental tool for psychologists and its teaching has been historically neglected. For this reason, this study aimed to characterize PA teaching in the state of São Paulo. For this purpose, the course hours’ load, course name, semester of occurrence, number of courses offered and the course contents of this psychological knowledge area were considered. 121 syllabus belonging to 33 undergraduate programs of 31 universities were analyzed. These programs offer an average of 3.7 PA courses and 249 hours’ load. The results revealed insufficient time to minimally treat the basic subjects of this knowledge field. A plurality of the courses names was also observed, a factor that indicates the lack of a common language in the area. Regarding the course contents, 18 categories of analysis were created. Psychological Tests was the most recurrent one and covered the theoretical aspects of these instruments, including psychometric characteristics. Ethics and Legislation was the second category with the highest incidence, indicating an advance. However, the results indicated the persistence of an essentially technicist training, emphasizing the application and interpretation of tests procedures that mostly investigate personality and intelligence. The research found a wide variety of psychological tests, 82 in total, in the syllabuses. The Wechsler scales and the Thematic Apperception Tests collection in PA teaching were two of those that stands out. In conclusion, many aspects of PA teaching could be transformed to achieve minimum quality criteria, conforming to the scientific guidelines of this field.
Desenvolvimento de um sensor eletroquímico com nanopartículas de ouro e ftalocianina de cobre para a detecção de metais potencialmente tóxicos
(Universidade Federal de São Carlos, 2021-06-30)
Cuña, Leonardo José Quintero Da
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Ferreira, Marystela
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https://lattes.cnpq.br/4714185516263478
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https://lattes.cnpq.br/5533320617294660
Using the LbL self-assembly technique, an ITO electrode was modified with gold nanoparticles stabilized with PAH and copper phthalocyanines, for the detection of cadmium (Cd) and lead (Pb). Using the UV-Vis technique it was possible to monitor the film growth. The FTIR technique allowed us to observe the bands corresponding to PAH (3447 cm-1 due to NH+3) and CuTsPc (1024 cm-1 due to SO-3), responsible for the growth of the film. The electrochemical behavior of the sensor was evaluated with cyclic voltammetry, using an electrolyte solution containing 5 mmol L-1 of Paraquat and 0,1 mol L-1 KCl. Evaluating the reversibility criteria, it can be seen that the redox process is almost reversible and the mass transfer from the solution to the sensor surface is by diffusion. The Square Wave Anodic Stripping technique (SWAS) allowed the detection of Cd2+ and Pb2+ ions in the concentration range of 9.9 µg L-1 to 99 µg L-1. The analytical curves show two linear growths in this concentration range reaching detection limits of 3.7 µg L-1 for Cd2+ and 9.1 µg L-1 for Pb2+. From the analysis of real samples (drinking tap water) it can be concluded that the method is sensitive in the determination of these elements and can be used in the analysis of natural water samples. In general, the films showed satisfactory responses to analytes.
Extração e separação do carotenoide luteína através da cromatografia líquida de alta eficiência
(Universidade Federal de São Carlos, 2021-06-30)
Soler, Maria Isabel de Carvalho
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Brondi, Silvia Helena Govoni
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https://lattes.cnpq.br/8181021217976278
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Oliveira, Regina Vincenzi
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https://lattes.cnpq.br/6609377714413073
Chemistry contributes to the production of numerous fundamental products for humanity, and currently, the production of these compounds takes environmental sustainability into account, that is, it aims to use techniques and methodologies that reduce or eliminate the use of solvents, reagents, or the generation of by-products harmful to human health or the environment. Among these compounds are the carotenoids, a group of pigments that plays a fundamental role in human health, being able to highlight their effect on the immune response, intracellular communication, and the fight against diseases related to aging. Emphasis should be given to lutein, a carotenoid presents in fruits and vegetables that is used in the food industry as a dye and has a potential biological activity in the prevention of cancer, cardiovascular disease, and retinal degeneration. The natural industrial source of this carotenoid is the flowers of the marigold (Tagetes erecta L.) that have low lutein content. One of the sources for obtaining lutein and several other carotenoids are microalgae, organisms with great biotechnology potential that can be grown in controlled environments or open tanks in the presence of sunlight or artificial light. To obtain lutein through microalgae it is necessary to promote an extraction by breaking the cell wall, followed by purification. The most used extraction method is solvent extraction and because carotenoids are fat-soluble, it is common to carry out saponification to remove lipids that may interfere with their extraction with nonpolar solvents. After extraction, carotenoids are separated by high-performance liquid chromatography (HPLC). Given the health benefits of lutein, associated with the potential of microalgae in the production of this carotenoid, the present project studies analytical methodologies reported in the literature for extracting lutein from microalgae. The methodologies studied involve three crucial processes: cell disruption, saponification, and extraction with an organic solvent. The methods presented by Ceron et al. (2008) and Utomo et al. (2008) report that cell disruption performed through milling results in the best lutein recovery. The saponification procedure often used in the reported studies applies an alkaline agent, such as KOH, in methanolic or ethanolic solution, and Soares et al. (2016) note that the saponification step in ethanolic solution prior to lutein extraction, offers simplification of the chromatographic profile obtained for the carotenoid mixture.
Fabricação de um circuito lock-in para a estabilização de frequência de diodo
(Universidade Federal de São Carlos, 2021-06-30)
Martins, Matheus do Amaral
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Teixeira, Raul Celistrino
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https://lattes.cnpq.br/6108339817883159
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https://lattes.cnpq.br/3924506084415003
A cold atom experiment requires lasers with stable frequencies. In this work, we fabricated and characterized a lock-in circuit for frequency stabilization of a laser diode. The principle of stabilizing a physical quantity by feedback, particularly in the lock-in system, is discussed. The fabricated circuit is discussed, and its main characteristics are measured.
Brincando e interagindo na educação infantil: experiências de bebês no cotidiano de práticas educativas
(Universidade Federal de São Carlos, 2021-06-30)
Gigioli, Maria Elisa Nicolielo
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Sommerhalder, Aline
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https://lattes.cnpq.br/4775432120371947
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https://lattes.cnpq.br/4258533015353852
The research is based on the understanding that babies are capable of learning and that they are powerful from birth, thus, it investigates their interactions in the context of daycare based on the following questions: How do babies interact with their peers and adults when expressing themselves playing in the daycare context? How do babies interact with toys, objects, and space while playing? As a result of these questions, the research aims to identify, describe and analyze, through playing, the interactions of babies with their peers, adults, toys, objects, and space during playtime in the Nursery. We understand that children have numerous languages such as babbling, facial and body expressions, but the focus of this investigation is the language of play. Initially, a bibliographic survey was carried out to substantiate the social and scientific relevance of the research, followed by theoretical framework research whose main themes were: Emmi Pikler's approach, understanding about babies, early childhood education in Ministry documents of Education, educating, caring and playing as a function of Early Childhood Education. With a qualitative approach, the investigation was carried out in a municipal daycare center in a city in the countryside of São Paulo, with 13 babies from the Nursery I class and four educators responsible for the class. The investigation was restricted to looking at the moments of playing that occur from the availability of toys and objects to babies, by the educators. The instrument used to collect the data was the interactive observation and it was registered through video, followed by the full written transcript, with 24 transcripts referring to the 24 data collection sessions that lasted approximately 30 minutes each. The organization of the collected data was made based on content analysis. As the last stage of this analysis, the results were analyzed in the light of the theoretical framework, having as primary authors: Falk, Tardos, Tardos and Szanto-Feder, Soares, Kálló and Balog, Gonzalez-Mena and Eyer, Barbosa, Rinaldi. The results revealed that the interactions and games experienced by the babies took place in a context with no offer of qualified experiences and situations. An example of this was the organization of the space to play, which remained in the same way, with the same toys and objects, without careful observation, planning, or educational intention on the part of the educators so the babies were encouraged in their actions. Therefore, we discussed some aspects that contribute to spontaneity practices that are present in early childhood education, such as in the context of teacher education in Brazil, indicating the necessity of studies that contribute to the implementation of qualified practices in daycare centers. The research revealed the importance of providing babies with the true experience which gives opportunities for interactions and games in a challenging environment and that encourages them in their discoveries. Therefore, it is considered necessary to change educational practices with babies from 0 to 3 years to educate and transform them.
As dinâmicas da profissionalização no capitalismo informacional: identidade youtuber em disputa
(Universidade Federal de São Carlos, 2021-06-30)
Siqueira, Wellington Luiz
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Bonelli, Maria da Glória
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https://lattes.cnpq.br/1739441747281321
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https://lattes.cnpq.br/1064672527633273
YouTube was one of the biggest cultural industries on the internet in 2021. With the transformations of the web and its stabilization on platforms controlled by large companies, masses of viewers started to form, and this caused, in a way, that some people produced content regularly for these audiences. The platform had about two billion active users and its content was produced by them, who became known as youtubers. These new actors started to transmit their social identities in their videos, in a relaxed way, and with that transformed the youtuber identity, which was attributed to them, in their occupation, as they became visible and produced videos in search of income and visibility. They are the focus of this research. What meanings did these subjects attribute to the youtuber identity and at what moments did they identify with it and mobilize it in their trajectories? How did they call themselves and what occupational dynamics emerged from this mobilization? How did these subjects suture their occupational identifications to that identity? The hypothesis of this research is that the youtuber identity, due to the time that the subjects devoted themselves to it and the income they received, gradually became an occupation for its practitioners, focused on converting visibility into gains in an unequal reward distribution platform. The general objective of the work is to understand, from the identifications of these subjects, the extent to which they approached or distanced themselves from that specific point of identification, the youtuber identity, and how these dynamics occurred in the delimitation of the identity boundaries between the subjects regarding the incipient occupation they shared. In the fieldwork, carried out between 2018 and early 2020 in the metropolitan region of São Paulo, mixed methodological resources were used, combining qualitative field observations, face-to-face interactions, with the help of in-depth interviews, and online fieldwork, adding it with secondary data from the platform itself about the subjects and their numbers. This data was partially analysed using the Atlas.ti 8 data analysis software. In unequal conditions, the subjects developed their own culture of content creation to deal with the daily problems of their new work and looked for creative ways to convert visibility in income, using their social identities as differentials in this competitive market to become attractive to audiences and the market, and to produce sufficient autonomy of the platform and its rules to follow with their media projects about themselves.
O papel dos stakeholders na gestão de riscos em recalls na cadeia de alimentos
(Universidade Federal de São Carlos, 2021-06-30)
Oliveira, Lucas Lima de
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Pereira, Carla Roberta
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https://lattes.cnpq.br/6148011136943940
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Silva, Andrea Lago da
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https://lattes.cnpq.br/2380499339281186
The complexity of food supply chains (FSCs) is one of the factors that increase the vulnerability of companies to internal, external and environmental risks, causing different types of recalls, such as failures in product quality and safety. Recalls increase the risk to human health and have negative effects on all stakeholders, which may adversely affect the company's performance, reduce the brand value, cause losses in revenue and market share, in addition to changing consumer demand and prices in the future market. Since recalls are generally the result of multiple risks, it is necessary to use risk management in the supply chain in order to minimize such incidents in the food industry. Thus, the objective of this study is to analyze what are the different roles of stakeholders in the risk management process in food recall events. In order to explore this problem, a systematic literature review was carried out, and from 83 selected articles, it was identified that 10 stakeholders responsible for 25 risk management actions in a recall process in the FSCs. Then, an empirical research was conducted with different actors involved in recall events in two food industries in Brazil. As a result, it was observed that stakeholders are involved in four phases of food recall management, with 29 risk management actions aimed at preventing, controlling, regulating, and communicating risks. From the results found, an explanatory map was prepared with the risk management actions that each stakeholder performs to prevent or contain the impacts of a recall on the FSCs, and a frame showing which phases of the management of a recall the stakeholders must be present and their respective actions at that given moment. In terms of academic contribution, this research contributes to the literature by exploring the management of recalls at FSCs from the perspective of the theory of stakeholders identifying different needs, obligations and relationships between stakeholders. In terms of managerial contributions, the results can help companies, professionals and health agencies to understand their responsibility and role in the food supply chain, in addition to what moments in the management of recall processes they act to apply the appropriate actions in a way to avoid or limit the impacts of a recall.
Introdução ao planejamento de experimentos (Design of Experiments, DoE): conceitos básicos e aplicações
(Universidade Federal de São Carlos, 2021-06-30)
Hilário, Felipe Ferri
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Pereira Filho, Edenir Rodrigues
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https://lattes.cnpq.br/3394181280355442
Experiment design is a technique of experimental planning and data treatment that aims to properly visualize how the variables of an experiment affect the response. Through this technique it is possible to predict what should be the best experimental condition for a given experiment. This work aims to introduce the concept of experimental design, as well as describe how the technique is applied. From the preparation of an experimental design to the processing of data and interpretation of the results obtained. Initially, the theoretical concepts of the technique and the calculations necessary for a correct data treatment will be discussed. Finally, examples from the literature will be shown. The first example deals with an application in forensic chemistry and the second example deals with an application in an environmental study of soil pollution by Lead due to the disposal of electronic material. At the end of the reading, the reader should be able to apply the concepts presented here and interpret the results obtained. Thus, the work presented here should work as a tutorial for those interested in the subject.